Method getWordAtCell

lib/selection-manager.ts:813–840

* Get word boundaries at a cell position

(col: number, row: number)

   * Get word boundaries at a cell position
   */
  private getWordAtCell(col: number, row: number): { startCol: number; endCol: number } | null {
    const line = this.wasmTerm.getLine(row);
    if (!line) return null;

    // Word characters: letters, numbers, underscore, dash
    const isWordChar = (cell: GhosttyCell) => {
      if (!cell || cell.codepoint === 0) return false;
      const char = String.fromCodePoint(cell.codepoint);
      return /[\w-]/.test(char);
    };

    // Only return if we're actually on a word character
    if (!isWordChar(line[col])) return null;

    // Find start of word
    let startCol = col;
    while (startCol > 0 && isWordChar(line[startCol - 1])) {
      startCol--;
    }

    // Find end of word
    let endCol = col;
    while (endCol < line.length - 1 && isWordChar(line[endCol + 1])) {
      endCol++;
    }

    return { startCol, endCol };
  }

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